Bugzilla bug #64471: need to use the value of the 'xferred' argument when sendfilev fails with EAGAIN/EWOULDBLOCK.
Bugzilla bug #64471: need to use the value of the 'xferred' argument when
sendfilev fails with EAGAIN/EWOULDBLOCK.

thespooler/nspr,thespooler/nspr,thespooler/nspr,thespooler/nspr,thespooler/nspr